Hi,
Due to a massive increase in my mortgage payments I am having to sell my Integra Type R

I don't want to buy a boring replacement car, I have spotted a nice looking MK1 Golf GTI Cabriolet on ebay. it is the 1.8. Obviously coming from a 1998 Honda to a 1985 VW I am expecting a huge difference in reliability and performance, but what else should i expect?
I used to have a 1986 VW Polo that used to cut out all the time in the wet and cold, is this likely to happen with the GTI engine, or are they fuel injected?
Also, with it being a softtop, are they generally very leaky cars? If so, are they easy to fix?
The one i am looking at is a 1985 model with 113k on the clock with 12 months MOT. Does about £500 sound about right for this?